I recently received an email from a customer who was running SCORM Engine 2006.x....when importing a 2004 3rd Edition course, he received this warning.
"The importer determined that this manifest is most likely compatible with the SCORM 1.2 standard, however there is a resource node with a scormType (capital T) attribute indicating that this manifest may have been intended to be a SCORM 2004 manifest and thus may not play correctly"
They received this warning because 3rd Edition had not bee released as of the release of 2006.x and the imported did not know what to do with the manifest. Here are a few things you can do to get around this warning:
1. Upgrade to the latest version of SCORM Engine.
2. In the root of your manifest, you have most likely referenced "SCORM 2004 3rd Edition" as the schema version. Change this to "CAM 1.3" and the course should revert back to 2nd edition and work fine.
Something to look out for:
There's a small chance that your course is taking advantage of some 3rd Edition specific features, so if you see any strange behavior, that may be the case, but in all likelihood, it should be fine.